Customer Statement App for WHMCS

WHMCS ([login to view URL]) does not offer customer statements to be sent to customers showing their invoice, what they have paid and what is outstanding. I want a separate PHP app that can call the WHMCS API to collect information to create a customer statement to be sent to the customer. The App should run outside WHMCS on Linux Web Server. The following steps should be taken to call WHMCS API to collect the customers in my WHMCS, then select customer and then collect invoices and payments then create a PDF statement that can be downloaded or sent back over WHMCS API to be emailed. 1. Call WHMCS API to collect ALL customers within WHMCS 2. I select the customer from the above list 3. Call WHMCS API to collect the selected customers details (full name etc) 4. Call WHMCS API to collect all invoices issue 5. Call WHMCS API to collect all transactions (payments made) 6. Create a statement with information supplied 7. Offer two options. Download as PDF of Send as PDF over WHMCS API All API information is available on WHMCS website, I will also supply DEV WHMCS to collect info from.